不同屏蔽措施对电磁干扰抑制的研究Research on EMI suppression with different shielding measures
张浩,陈良亮,齐连伟,王念春,陈中,黄学良
摘要(Abstract)：
开关器件对地寄生电容是共模电流流通的主要路径,产生的传导EMI会对设备形成不利影响。以充电机水冷散热器为例进行分析,利用金属静电屏蔽特性采取两种措施降低电磁干扰。一种是在开关器件与散热器之间的导热硅脂间插入一接直流0 V地的金属层;另一种是对水冷散热器结构进行改造,将金属水箱分为两部分,利用绝缘密封安装槽连接这两部分,其中一块金属水盖接到直流0 V地上,另一块水盖通过机壳接地。仿真结果表明采用所述方法均能有效地抑制传导共模电流,而后一种方法能达到更好的效果。
关键词(KeyWords)： 水冷散热器;导热硅脂;对地寄生电容;传导EMI;静电屏蔽;电磁干扰
基金项目(Foundation): 国家电网公司项目:适应复杂环境的水冷电动汽车直流充电机关键技术研究;; 国家自然科学基金重大国际合作项目(51320105002)资助~~
作者(Author): 张浩,陈良亮,齐连伟,王念春,陈中,黄学良
DOI: 10.16652/j.issn.1004-373x.2018.07.023
参考文献(References)：
- [1]余军,马雅青,赵振龙,等.电动汽车用水冷散热器的设计及仿真[J].大功率变流技术,2015(3):51-53.YU Jun,MA Yaqing,ZHAO Zhenlong,et al.Design and simulation of water cooled radiator for electric vehicle[J].High power converter technology,2015(3):51-53.
- [2]陈特放,刘骞,余明扬,等.电力机车用110 V大功率高频开关电源电磁兼容性研究[J].中国铁道科学,2005,26(2):100-105.CHEN Tefang,LIU Qian,YU Mingyang,et al.Electromagnetic compatibility of 110 V high-power high frequency switching power supply for electric locomotive[J].China railway science,2005,26(2):100-105.
- [3]BALCELLS Josep.Conducted EMI reduction in power converters by means of periodic switching frequency modulation[J].IEEE power electronics,2007,22(6):2271-2281.
- [4]JOSIFOVI?I,POPOVI?-GERBER J,FERREIRA J A.Improving Si C JFET switching behavior under influence of circuit parasitics[J].IEEE power electronics,2012,27(8):3843-3854.
- [5]WANG Shuo.Investigation of hybrid EMI filters for common mode EMI suppression in a motor drive system[J].IEEE power electronics,2010,25(4):1034-1045.
- [6]CHEN H L,FENG L,CHENG W,et al.Modeling and measurement of the impedance of common mode noise source of switching converters[C]//Proceedings of 2006 IEEE APEC.[S.l.]:IEEE,2006:1165-1168.
- [7]SON Y C.A new active common-mode EMI filter for PWM inverter[J].IEEE power electronics,2003,18(6):1309-1314.
- [8]HARTMANN M.EMI filter design for high switching frequency three-phase/level PWM rectifier system[C]//2010 IEEE APEC.[S.l.]:IEEE,2010:986-993.
- [9]ZHANG X,BOROYEVICH D,MATTAVELLI P,et al.EMI filter design and optimization for both ac and dc side in a DCfed motor drive system[C]//Proceedings of 2013 IEEE APEC.[S.l.]:IEEE,2013:597-603.
- [10]汪泉弟,安宗裕,郑亚利,等.电动汽车开关电源电磁兼容优化设计方法[J].电工技术学报,2014,29(9):225-231.WANG Quandi,AN Zongyu,ZHENG Yali,et al.Optimal design method of EMC for electric vehicle switching power supply[J].Transactions of China electrotechnical society,2014,29(9):225-231.